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    A Hilbert-Huang transform approach to space plasma turbulence at kinetic scales

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    Authors
    Consolini, G.
    Alberti, T.
    Yordanova, E.
    Marcucci, M.F.
    Echim, M.
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    Discipline
    Physical sciences
    Subject
    Astrophysics
    Kinetics
    Magnetohydrodynamics
    Magnetoplasma
    Particle accelerators
    Plasma turbulence
    Solar wind
    Canonical structure
    Fast solar winds
    Fluctuation frequency
    Hilbert Huang transforms
    Magnetic field fluctuations
    Multiscale nature
    Turbulent fluctuation
    Turbulent media
    Mathematical transformations
    Audience
    Scientific
    Date
    2017
    Metadata
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    Description
    Heliospheric space plasmas are highly turbulent media and display multiscale fluctuations over a wide range of scales from the magnetohydrodynamic domain down to the kinetic one. The study of turbulence features is traditionally based on spectral and canonical structure function analysis. Here, we present an novel approach to the analysis of the multiscale nature of plasma turbulent fluctuations by means of Hilbert-Huang Transform (HHT). In particular we present a preliminary application of this technique to magnetic field fluctuations at kinetic scales in a fast solar wind stream as observed by Cluster mission. The HHT-energy spectrum reveals the intermittent and multiscale nature of fluctuation frequency at kinetic scales indicating that there are no-persistent and long standing frequencies.
    Citation
    Consolini, G.; Alberti, T.; Yordanova, E.; Marcucci, M.F.; Echim, M. (2017). A Hilbert-Huang transform approach to space plasma turbulence at kinetic scales. , Journal of Physics: Conference Series, Vol. 900, Issue 1, A012003, DOI: 10.1088/1742-6596/900/1/012003.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/6316
    doi: http://dx.doi.org/10.1088/1742-6596/900/1/012003
    scopus: 2-s2.0-85032495282
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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